Dial for knitting-machines.



H. SWING-LEHURST.

DIAL FUR KNITTING MACHINES,

AIPLIGATIOH FILED NOV.16, 1909.

Patented may "i, 1.912.

m r M L 20 2 L v. a T a UTED STATES PATENT HARRY SW'INGLEHURST, OF PHILADELPHIA, PENNSYLVANIA, ASSZGNOR, MESH ASSIGNMENTS, T0 SCOTT & WILLIAMS, INCORPORATED, OF CAMDEIQ', NEW' JERSEY.

A CORPORdTION OF NEW JERSEY.

DIAL m. Kmr'rmo-MAoniNEs.

Specification of Letters Patent.

Patented may *2,

Application filed November 16, 1909. Serial No. 528,313,

- of my invention being to provide, in such dial, radial and parallel sided grooves for the guidance of the needles. This object I attain in the manner hereinafter set forth,

reference being had to the accompanying drawing, in which-- Figure 1 represents, on an exaggerated scale, a top view of part of a knitting machine dial having the grooves for the guidance of the needles formed therein in accordance with my invention; Fig. 2 is a similar view illustrating a modification of the invention; Fig. 3 is an enlarged transverse section on the line a a, Fig. 1; Fig.

4 is an enlarged transverse section on the line 7 -b, Fig. 2; Fig. 5 is aperspective view of a partition strip'such as shown in Fig. l, and Fig. 6 perspective view of a partition strip such as shown in Fig. 2.

In the ordinary practice of making a needle dial for knitting machines of the type to which my invention relates, radial.

grooves or slots are out in the face of the dial 1 and metal strips are then inserted into and secured in these slots, these strips projecting above the face of the dial so as to form between them grooves for the guidance of the needles.

As the slots for the reception of the strips must of necessity be parallel sided, on account of being cut by a milling tool, it follows that the spaces between the strips, which spaces constitute the n edle grooves, must be of a flaring character, being wider at their-outer ends than at their inner ends because of the greater diameter of the outer portion of the dial. In order to overcome this objection, I so form the slots in the dial for the reception of the partition strips thatthe latter will be separated. at the outer portion of the dial to such an extent as to provide the proper width of grooves for thereception of the needles and those portions of the partition strips which project above the face of the dial are cut away or recessed either on both sides, as represented at 2 in Figs. 1 and 5, or on one side only, as represented at 3 in F igs. 2 and 6, so as to preserve the same width of groove throughout, each partition strip therefore presenting a lower parallel sided portion a:

for insertion in the groove which has been formed in the face of the dial for its reception, and an upper tapered or wedgeshaped member 2 or 3 for the guidance of the needles.

I claim l. A knitting machine dial having formed therein radial parallel-sided slots for the reception of similarly shaped rib-forming strips,those portions of the strips which project above the face of the dial being tapered so as to form parallcl-sided radial grooves for the guidance of the needles.

2. A knitting machine dial having formed therein radial parallel-sided slots for the reception of similarly shaped rib-forming strips, those portions of the strips which project above the face of the, dial being tapered on each side so as to form parallelsided radial grooves for the guidance of the needles.

3. A rib-forming strip for a knitting machine needle dial, said strip having a lower parallel-sided member for application to the dial and an upper tapering member for the guidance of the needles.

4. A rib-forming strip for av knitting machine needle dial, said strip having a lower parallel-sided member for amilicat-ion to the dial and an upper tapering member d on each side for the guidance of the needles.

In testimony whereof, I have signed my name to this specification, in the presence of two subscribing witnesses.

HARRY SWINGLEHURST. Witness es Lonmro A. COSTELLO, EDWARD H. BUCKLEY. 

